“NGFN 1957”的概念、定义、翻译、参考文献-科学参考

单词	NGFN 1957
释义	NGFN 1957 Encyclopedia 工学重力测量释 National Gravity Fundamental Network 1957; NGFN 19571957国家重力基准网中国建立的第一个国家重力控制网。共有27个基本重力点（包括南京、青岛、上海三个摆仪点与青岛市内的二点）和80个一等重力点。
随便看	isomorphic manifold isomorphic mapping isomorphic measurable spaces isomorphic measure space isomorphic model isomorphic morphism isomorphic normal series isomorphic normed space isomorphic object isomorphic operator isomorphic ordered set isomorphic posets isomorphic quadratic form isomorphic quadratic space isomorphic refinement isomorphic relation isomorphic representation isomorphic resolution isomorphic responsibility isomorphic ring isomorphic scheme isomorphic set isomorphic simplicial complex isomorphic space isomorphic structure

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。